Just wanted to know if DXB-LHR flights have the new lie flat business class seats. I checked flight schedules and 4 out of 5 flights have the 777-300ER. Does that mean that I will get the new seats provided I am on the 777-300ER? Or are some of these aircraft not upgraded yet? I know for a fact that EK 001 gets the upgraded 777.

Thanks in advance!